What's the answer?pls help
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Answer:
Devon use instead of
in his reason. So, we can say that triangles are not similar.
Step-by-step explanation:
If two triangles are similar then their corresponding sides are proportional.
If triangle TUV and XYZ are similar, then
The reason given be Devon is
He use the correct concept, that the corresponding sides of similar triangle are proportional. But he use instead of
in his reason.
Therefore his reason is incorrect. So, we can say that triangles are not similar.
For the given triangle, the cosine of angle A equals .
Step-by-step explanation:
Step 1; In the given triangle, the opposite side has a length of 9 units, the adjacent side has a length of 3√3 units while the hypotenuse of the triangle measures 6√3 units. To calculate the cosine of angle A we divide the adjacent side by the hypotenuse side.
cos A = .
Step 2; Length of the adjacent side = 3√3 units.
Length of the hypotenuse side = 6√3 units.
cos A = 3√3 / 6√3
cos A = .
To check we also have A = 60° and cos 60° = .